Solar Air Collector

Innovative Air-Based Solar Heating Solution: DVC Air Collector

The DVC air collector revolutionizes solar thermal systems with its direct-flow dual-pass glass vacuum tube design, featuring interconnected tube ends that eliminate traditional issues like pipe bursting and freezing. Leveraging interference coating technology, it ensures high-temperature resistance, cold tolerance, and optimal solar absorption. An integrated expansion joint in the inner tube safeguards against thermal shock damage, while air-based heat transfer efficiently converts solar energy into indoor heating. Designed for high efficiency and low maintenance, this system excels in multi-energy integration applications, delivering reliable warmth with adjustable airflow.

Key Applications & Technical Breakthroughs

Ideal for standalone buildings requiring daytime heating—such as school classrooms, office complexes, workshops, and transportation hubs—the DVC system also supports industrial drying applications. Its core innovations include:

• Dual-Pass Vacuum Tube Technology

  
  

  Patented all-glass dual-pass tubes with expansion joint structure enable head-to-tail air circulation, minimizing flow resistance while maximizing air throughput. This design eradicates freeze risks and fluid leakage common in traditional liquid-based systems.

• High-Performance Coating System

• Magnetron-sputtered selective coating achieves 93% ±2% solar absorbance (AM1.5) and ≤6% emissivity (80°C), optimizing energy capture and retention.

• Interference coating technology ensures stable operation across extreme temperatures, with peak working temperatures exceeding 280°C and solar-to-thermal efficiency surpassing 80%.

• Air-Based Thermal Management

  
  

  Replacing liquid with air as the heat transfer medium eliminates freeze-thaw cycles and corrosion risks. Heated air circulates via natural or forced convection, delivering warm air directly or through heat exchangers to end-use spaces.

• Robust Engineering & Sustainability

• German-engineered PU insulation (high-pressure injection, constant-temperature foaming) provides uniform, dense thermal barriers while meeting eco-toxicity standards.

• Designed for 50+ years of maintenance-free operation, resisting high altitudes, -40°C cold, and thermal shock via integrated expansion joints.

• Seamless integration with air-source heat pumps enhances COP performance in subzero regions, optimizing multi-energy hybrid systems.

Product parameters